Home > Subjects > Physics > Level 3 > 3.6 Electrical systems > Achievement criteria
- Subject: Physics
- AS: AS90523
- Level: 3
- Credits: 6
- External
Physics 3.6 Demonstrate understanding of electrical systems
Achievement criteria
The level of performance that you will gain will be determined by the complexity of the questions, and how you answer them. You need to be able to describe and explain electrical systems and use mathematical methods to solve problems.
Minor errors (computational or transcription) will not be penalised if the process used to determine the solution is clearly indicated and is valid.
Achievement
Make sure you can:
- Identify or describe aspects of phenomena, concepts, or principles.
- Solve straightforward problems that involve a single-step process.
- Recognise correct concept/phenomenon/principle and give a simple descriptive answer in both written and diagrammatic form, for example:
- the discharge of a capacitor in a closed circuit
- that a capacitor takes five time constants to become fully charged or discharged
- the effect of the resistance on the discharge current from a capacitor
- Recognise the correct concept and apply reasonable mathematical skills, for example:
- the relationship between angular and cyclic frequency
- the relationship between inductor reactance and angular frequency.
Achievement with Merit
Make sure you can:
- Give accurate explanations in terms of phenomena, concepts, principles, and/or relationships.
- Solve problems that may involve using a complex formula or rearrangement or some deduction as to the relevant concept or principle.
- Use physics terminology to explain principles related to DC circuits and capacitance, as well as electromagnetic induction and AC circuits.
Achievement with Excellence
Make sure you can:
- Give concise and accurate explanations that show clear understanding in terms of phenomena, concepts, principles, and/or relationships. Your answers will typically have minimal irrelevancies. In other words, you cannot include any explanations that are not relevant. Do not guess!
- Solve complex problems that will involve more than one process and concept.
- Show numerical accuracy and correct rounding, and use SI units in answers.
